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mod_entropy is an Apache module that creates random numbers from incoming requests. It uses the Linux RNDADDENTROPY ioctl. Because user interactions with a Web server are random through time, this information is used to fill the kernel's random pool.

fpgatools is a toolchain for programming flexible programmable gate arrays (FPGAs). The only supported chip at this time is the xc6slx9, a cheap (circa $10 U.S.) but powerful 45nm-generation chip with about 2400 LUTs, block ram, and multiply-accumulate devices. The principles of fpgatools are to reach the maximum physical performance of the chip, to provide fast development cycles, to be an independent toolchain which only depends on other Free Software, and to be a lightweight C implementation without a GUI.